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smadextc.dll

SmadExt

Smadsoft

The library smadextc.dll, “Smadav shell extension” has been detected as malware by 38 anti-virus scanners. It is registered as a context menu handler (displays a menu when right-clicked in Explorer) named “SmadExt”. Accoriding to the detections, it is a variant of Zbot (Zeus), a trojan that attempts to steal confidential information (online credentials, and banking details) from a compromised computer and send it to online criminals via a command-and-control server.
Publisher:
Smadsoft

Product:
SmadExt

Description:
Smadav shell extension

Version:
1.1.0.0

MD5:
ea5eddfa26281c039dfaafa49bf0d50e

SHA-1:
890d30db361984b16f6f3d1b6d5541c90a346431

SHA-256:
9ead90d6d633137990c53821951705292d3d945eb71f795a07922dc9531e23ca

Scanner detections:
38 / 68

Status:
File is infected by a Virus

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
4/1/2025 8:22:32 PM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Win32.Ramnit.N
-40

AegisLab AV Signature
W32.Nimnul.mjEl
2.1.4+

AhnLab V3 Security
Win32/Ramnit.G
3.8.3.16

Avira AntiVirus
W32/Ramnit.C
8.3.3.4

Arcabit
Win32.Ramnit.N
1.0.0.802

avast!
Win32:RmnDrp
2014.9-170315

AVG
Win32/Zbot.F
2018.0.2438

Baidu Antivirus
Win32.Virus.Nimnul
4.0.3.17315

Bitdefender
Win32.Ramnit.N
1.0.20.370

Clam AntiVirus
Win.Trojan.Ramnit-1847
0.99.211

Comodo Security
Virus.Win32.Ramnit.K
26759

Dr.Web
Win32.Rmnet.8
9.0.1.074

Emsisoft Anti-Malware
Win32.Ramnit.N
8.17.03.15.05

ESET NOD32
Win32/Ramnit
11.15092

Fortinet FortiGate
W32/Ramnit.A
3/15/2017

F-Prot
W32/Ramnit.B!Generic
v6.4.7.1.166

F-Secure
Win32.Ramnit.N
11.2017-15-03_4

G Data
Win32.Virus.Nimnul
17.3.A:25.11192B:25.9090

IKARUS anti.virus
Virus.Win32.Ramnit
0.2.1.2

K7 AntiVirus
Virus
13.10.6.22727

Kaspersky
Virus.Win32.Nimnul
14.0.0.-1314

McAfee
W32/Ramnit.a
5600.6094

Microsoft Security Essentials
Virus:Win32/Ramnit.J
1.1.13504.0

MicroWorld eScan
Win32.Ramnit.N
18.0.0.222

NANO AntiVirus
Virus.Win32.Nimnul.bqjjnb
1.0.70.15657

nProtect
Virus/W32.SpyEye
17.03.15.02

Panda Antivirus
W32/Cosmu.E
17.03.15.05

Qihoo 360 Security
Virus.Win32.Ramnit.A
1.0.0.1120

Quick Heal
W32.Ramnit.A
3.17.14.00

Rising Antivirus
Virus.Mgr!1.9AD0 (classic)
23.00.65.17313

Sophos
W32/Ramnit-A
4.98

Total Defense
Win32/Ramnit.C
37.1.62.1

Trend Micro House Call
PE_RAMNIT.DEN
7.2.74

Trend Micro
PE_RAMNIT.DEN
10.465.15

Vba32 AntiVirus
Virus.Win32.Nimnul.b
3.12.26.4

VIPRE Antivirus
Virus.Win32.Ramnit.b
56666

ViRobot
Win32.Nimnul.A[h]
2014.3.20.0

Zillya! Antivirus
Virus.Nimnul.Win32.1
2.0.0.3232

File size:
250.5 KB (256,530 bytes)

Product version:
1.1.0.0

Copyright:
Copyright (C) 2010

Original file name:
SmadExt.dll

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\smadav\smadextc.dll

Registration
CLSID:
{8AB81E72-CB2F-11D3-8D3B-AC2F34F1FA3C}

COM registered:
Yes

File PE Metadata
Compilation timestamp:
2/18/2010 10:26:17 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

Entry address:
0x1D000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, A8, A6, 01, 20, 2B, 85, 0F, AE, 01, 20, 89, 85, 0B, AE, 01, 20, B0, 00, 86, 85, 40, B0, 01, 20, 3C, 01, 0F, 85, BC, 01, 00, 00, 83, BD, 3B, AF, 01, 20, 00, 74, 33, 83, BD, 3F, AF, 01, 20, 00, 74, 2A, 8B, 85, 0B, AE, 01, 20, 2B, 85, 3B, AF, 01, 20, 8B, 00, 89, 85, 78, AF, 01, 20, 8B, 85, 0B, AE, 01, 20, 2B, 85, 3F, AF, 01, 20, 8B, 00, 89, 85, 7C, AF, 01, 20, EB, 61, 83, BD, 43, AF, 01, 20, 00, 74, 58, 8B, 85, 0B, AE, 01, 20, 2B, 85, 43, AF, 01, 20, FF, 30, 8D, 85...
 
[+]

Entropy:
7.4748

Packer / compiler:
ASPack v1.08.04

Code size:
62.5 KB (64,000 bytes)

Context Menu Handler
Display name:
SmadExt

CLSID:
{8AB81E72-CB2F-11D3-8D3B-AC2F34F1FA3C}

CLSID name:
SmadExt Class


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